Charging system



FIG. 1 is a top, front, left side perspective view of a charging systemhaving the design of my invention;

FIG. 2 is front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is right side elevation view thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines shown represent unclaimed subject matter and form nopart of the claimed design.

CLAIM The ornamental design for a charging system, as shown anddescribed.